Sucker-rod wrench



(No Model.)

B. G. MGOLURE. Sucker Rod Wrench.

,144. Patented May 31,1881.

UNITED STATES PATENT OFFICE.

ERNEST Gr. MOOLURE, OF KENDALL GREEK, PENNSYLVANIA.

SUCKER-ROD WRENCH.

SPECIFICATION forming part of Letters Patent No. 242,144, dated May 31, 1881, Application filed April 26, 1881. (N0 model.)

To all whom it may concern:

Be it known that I, ERNEST G. MOGLURE, of Kendall Greek, McKean county, Pennsylvania, have invented new and useful Improvements in Sucker-Rod Wrenches; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and the letters or figures of reference marked thereon.

In withdrawing rods from wells it has been the common practice to use the common suckerrod wrench to prevent the lower rods from turning while the rod that is within the derrick is being unscrewed. The wrench is in direct contact with the collar of the sucker-rod connection or joint, and prevents the suckerrod elevator from catching upon said collar for the purpose of pulling out the next section of the string. To obviate this defect two elevators are commonly used, one to be attached just below the collar before the wrench is applied and the second ready at hand to be placed upon the collar of the next section of the stringof rods when the first one has been lifted by the line to the top of the derrick.

To dispense with one of these elevators and the trouble connected with their use is the object of my invention, which consists of a wrench having upon its upper face lugs or projections which hold the collar a suflicient distance above the body of the wrench, so that the elevator can he slipped between the collar and wrench.

Figure 1 represents a perspective view of my improved wrench; Fig. 2, a plan view of the wrench, showing the elevator in dotted lines upon the top of the same; and Fig. 3, a

sectional view of part of a sucker-rod, showing the location of the wrench and elevator when in use. The lug C is shown in dotted lines.

A represents the wrench having projections or lugs (J (J; D, the sucker-rod having collar H, and I the elevator. The projections or lugs O G are placed parallel with the mouth or opening in the wrench, and are preferably of less length than the diameter of the suckerrod connection. Their upper faces may be flat, but I prefer to have them inclined, as shown, so that the weight of the rods will force the collar backward and prevent it from slipping off the wrench. The object of these lugs is to hold the collar a sufficient height above the wrench to allow the jaws gg ot the sucker-rod elevator to pass across the parallel arms of the wrench and upon each side of the lugs, as shown in dotted lines, and grasp the rod below. the collar and above the wrench. The rod can then be lifted above the wrench or the latter can be lowered and removed from contact with the rod.

I do not limit myself to any particular form of lug or projection, but intend using any style that will hold the collar of a sucker-rod a sufficient distance above the wrench to allow an elevator clamp or jaws to be inserted between the body of the wrench and the collar of a sucker-rod without interfering with the position of the lugs upon the wrench.

What I claim as new is 1. A wrench having projections upon the uppi 1- surface, for the purpose set forth.

2. A wrench having projections upon the upper surface of each jaw thereof, for the purposes mentioned.

3. A wrench having projections with inclined faces upon its upper surface, for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 21st day of April, 1881.

ERNEST G. MCOLURE.

Witnesses M. F. HALLECK, D. L. LEWIS. 

